There are several choices of time if you want to visit Japan, depending
on the purpose of visiting Japan. If you only have once chance to
visit Japan, came at the beginning of April, when Sakura blossoms.
This following are several choices of time if you want to visit Japan:
Spring (Mar-May) - around the beginning of April, when the Sakura blossom, or who in Japan is called Hanami (hana = flower; mi (ru) = to see) In this time you can get a picnic under Sakura tree, which popular in Ueno Park, Tokyo.
Summer (June-Aug) dont miss Hokkaido. Summer in Hokkaido is
great for people who love the outdoors activity. Also in July - May
each year, in this time you could find the tourist attractions such as climbing on fuji mountain, because it's opened to the public when summer. Or you can see Hanabi (fireworks) tourist attraction in all places in Japan.
Autumn (Sept-Nov) Go to Kyoto. At this time in Japan the weather
is pretty good, not so hot and not cold. Momiji or who leaves change
color, usually red.
Winter (Dec-Feb) winter in Japan is very suitable for you who
want to feel the Christmas atmosphere. Each December, Hakodate
(Hokkaido) is white Illuminations along the way. In addition, each
beginning of Feb there Yuki Matsuri in Sapporo. Here you can see sculpture ice for various types of famous buildings in the world.